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Finding the Fourth Proportional to 13,797.81, 20,696.99 and 7,236.81

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Solution

The fourth proportional to 13,797.81, 20,696.99 and 7,236.81 is: 10,855.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,797.81 : 20,696.99 = 7,236.81 : x
  2. Step 2: Convert to fraction form
    13,797.81/20,696.99 = 7,236.81/x
  3. Step 3: Cross multiply
    13,797.81x = 20,696.99 × 7,236.81
  4. Step 4: Simplify right side
    13,797.81x = 149,780,148.02
  5. Step 5: Solve for x
    x = 149,780,148.02/13,797.81
  6. Step 6: Final answer
    x = 10,855.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.